The sum of all digits at odd positions $($right$-$to$-$left starting at $1$ as the right$-$most digit$)$ of a numeric input. $($For example, if the input is $432677,$ the sum would be $7+6+3=16.)$

The sum of all digits at odd positions $($left$-$to$-$right starting at $1$ as the left$-$most digit$)$ of a numeric input. $($For example, if the input is $432677,$ the sum would be $4+2+7=13.)$